Paper cutter



Patented Sept. 7, 1926.

Lumen STATES aosnrn HABERKORN, or oirIcAGo, mi er's.

PAPER emer e.

Apphcatieh filed August 5, 1925. Serial no. 48,2b6.

This invention relates particularly to a cutter of this kind for use with rolls of paper, and is used particularly by newspaper printers or PICSSIIIGII, although of course it 'niay have a more general use 'vvherever applicable. r l I Among the objects of the invention are: to provide a: cutter of this kind which can be adjusted for severing" one or more thicknesses of paper; to prevent the cutter from g-eug-ing'an more than the predetermined thicknesses; to prevent the severed edges of the cut paper from being folded upon theinselves in cutting the paper; to eliminate any electrifying effect by the use of a fiber cutter; and in general to produce the" construction herein shown and described. 7

In the accompanying drawings illustrating this invention, Figure 1 is a side eleva tion of a paper cutter constructed in accordance with the principles of this invention; Figure 2 is a section of the paper cutter showing its action with a single sheet of paper; Figure Sis a bottoinview; Figures 1s a view of the rear end; Figures is a sec tion taken on'the line 5-'5'0f FigureQ; and

' Figure 6 is a perspective of the cutter member.

Inprinting froin'rolls ofpaper it has been the practice to cut or score the roll, wherever necessary, with a sharp instrument,

which not only severs one sheet, but also may dan'ia'g'e a number of? layers beneath the outermost sheet, thereby resulting in much wastage of paper and also a great wastage of time in removing" the paper which is scored or'daniagecl on the'roll; It is found'that if a sheet is even partially severed or is cut a part of the way across it is very difficult to feed it in a printing press as the paper is liable to tear and become wrapped upon the ink rollers from which'it is hard to remove.

In using-a steel cutter, it is found that the cutter element has a certain attraction or electrifying effect upon the paper which makes the paper'stick to it, and thepoint of the insti'u nenttends to gouge: deeper as it passes through the paper from one side of theroll to the other, thereby'daniaging' The only satisfactory way is to conipletely' sever a'sheet or a man ber of thicknesses of the roll of paper from more thicknesses on one side than it does on are other. l a

The present invention is designed and intended to overcoine these objections by providing a cutter member which is substane0 tially' flat on the bottom with a point upon which the" paper rides sothat only the thicknesses engaged thereby will" be severed a space being providedatthe rear ofthe cutting portion for receiving the edges of the paper so that they will not be doubled over i even though they are not out smoothly as with a knife. i Referringmore partieiilarly to the, drawings, a hold or casing member 1 is formed with a rounded end"?! and sides 3 to cover a recessed portion 4, and the lower front edge is inclined or rounded upwardly at 5 as shown more clearly in Fignres land 2. The rear edges of the side wings3 are rounded downwardly at 6 ;the upper or back po'r: tion of the holder is formed with acounten sunk slot 7, and the rear edgeof the cutter is formed with a projection or moths; A cutter member 9, asjshown more clearly in Figure 6, is preferably Ihade of fiber, hard rubber or some other suitable ln aterial, the main portion of which iss'ubst'aritially the same'width as the holder Ineniber 1, so that it is flush withthe outer face of the holder rneinb'er. At the rear upper edge are anulnber of teeth 10 adapted to enga'g'ethe corresponding teeth 8 of the holder neinber and'i'n the upper edge is a threaded open- 111g 11 to receive a screw 12 inserted through theslet 7 for holding the inefhber 9 in place and in engagement with any one of the teeth 10. The lower front edge of the cutter inernber is reduced in thickness to form an extending tong-11 13, the front edge of which isrounded downwardly at 14 with a "further reduction 15 atthe tip thereof so thatwhen viewed from the bottorrias shown in Figure 3'th'e cutting tip 16 is siinply a flat appearingtongue of considerable width, rounded at-the outer end. Accutting'surface 17 is really formed by the tip reduction 15 above the front surface of the tip 16 so that the paper is broken irregularly rather than cut as by a sharp knife or other'instrulnent.

The extending tongue 13' is formed by reducing the sidesofthe cutting ineinber 9 along; the" arcs or curves 1' 18 which makes the ineniberfre elyadjustable tlie lioltler l and great importance in feeding the edgeof a 7 sheet into a printing press, for if the sheet is folded along part of' the edge and unfolded along another part, itmay be picked up by the printing rollers and torn, or otherwise folded; orcrumpled in an undesirable way 7 c a In operating tlns cutter, the front tip '16 isadjusted to engage one or more thicknesses of paper or other material which is to besevered; the tip is engaged with the I sheet 0r. sheets at the edge of the roll and by. running the instrument flatly over the roll from one edge to the other, the predeter- -mined number of sheets or thicknesses are completely .severed from one edge to the J'other. Even if the cutter; is stopped and withdrawn before a complete cut is made, a reinsertion jof the cutter through the out portion will engage only the same number of sheets,.and nofmore, and the transversecutwill be completed. It is practically impossible to start the cutter at any place exceptthe edge of the roll or sheet, because H the tongue is so flat and close tothe holder that it will not engage the sheet at the edge -thereof. Thus the cutter will not gouge into M a sheet; it will not take more than its predetermined thicknesses, which is determined by the setting of the cutting, member, and

even if held in the hand or carried in ones pocket there is no danger of it cutting except in the authorized or regular manner of itsuseas above explained.

Iclaim: v 1. Ina paper cutter, a holder member having a recess atone side thereof, a cutter tongue, and means comprising a projection on one part and teeth on another ad ustable V relatively to vary the position of thecutter member adjustable in the recess and having ,a tongue extending to the outer edge of the recess and arecess at the rear end of the member in the holder.

2. In a paper cutter, a holder on one side of less width than the width of t-herecess and with sides spaced apart more thanthe width of the tongue at the rear of the tongue to allow sheets severed by the cutter member to slip bywithout creasing or folding them.

flat edges in the same having a recess 111 one edge, a cutter member fitting within the recess and having a tongue flat 3. In a cutter of the class described, a holder member having a recess opening from one edge thereof and the extremity of this edge roundedupwardly from the recess, of a cutter member insertable within the recess and having a fiat tongue with a cutting edge at the tip, the holder and the cutting member being inclined correspondingly so,

that a longitudinal movement of the cutter member in theholder will advance or withdraw the tongueat the recessed edge of the holder and means for adjustably fastening the cutter member Within the holder. 1

4,111 a cutter'of the class described, a-

holder having a recess opening from one edge thereof, :a' cutter memberv insertable 1n the. recess and having a flat surface to pro- .ijectat the edge ofthe recess, the inner surface of the recess being inclined and formed with a projection at one end thereof, the

cutter member being correspondingly inclined and provided with a plurality ofteeth for engaging the projection, and means for the holder.

'5. In a cutter of the class described, a holder having a recess opening from one edge thereof, the inner surface of the recess tfastening'the cutter member adjustably in;

being inclined and having aprojection at the end, a cutter memberhaving a flat tongue and an opposite'edge inclined thereto and having teeth to engage the projection of the h older,"and means to fasten the member in the holder and to adjustably engage any one of the teeth with the said pro ection.

.6. In a, cutter of the class described, a

holder having a recess in one edge, a cutter ad ustable therein having a tongue flat on one side with "a cutting surface extending rearwardly from the tip thereof, and a recess at the rear of the tongue having spaced plane with the Hat side of the tongue; v r

7. In a cutter of the class described, a

holder having a recess therein formed by side wings, a cutter member having a portion the width of the holder to be inserted in the recess and'having a reduced flat side forminga tongue to project at the edgethereof, the thicker portion of the cutter member being recessed at the rear of the tongue to form two parallel. side extensions, the faces of which are in the same plane with the flat side of the tongue.

8. In a cuttervof the class described, a holder having a recess in one edge, the extremity of thisedge being rounded away, and -an extension with an inclined surface at the end of'whichis a toothed projection, of a cutter member therefor of substantially the same thickness as the holder having an inclined surface adapting it to fit against the inclined surface of the ex tension and having teeth to engage the tooth 'of' the extension, the cutter member also having a tongue reduced in Width, flat on the outer side with a rounded extremity and with a cutting portion extending rearwardly from the opposite face of the tip, the tongue being less in Width than the recess and atfording a space at both sides between it and the edges of the recess of the holder,

the cutter member being recessed at the rear end of the tongue leaving side projections,

and fastening means insertable through the 10 projection of the holder into the cutter member adjustable for the variable engagement of the teeth of the holder and cutter members.

JOSEPH HABERKORN. 

